<script setup lang="ts">
import {ref, onUnmounted} from 'vue'
import emitter from '@/components/utils/emitter';
// 数据
let computer = ref('联想')
let toy = ref('')

// 给emitter绑定send-toy事件
emitter.on('send-toy',(value:any)=>{
  toy.value = value
})
// // 在组件卸载时解绑send-toy事件
// onUnmounted(()=>{
//   emitter.off('send-toy')
// })
</script>

<template>
  <div class="child2">
    <h3>子组件2</h3>
    <h4>电脑：{{ computer }}</h4>
    <h4>哥哥给的玩具：{{ toy }}</h4>
  </div>
</template>

<style scoped>
.child2 {
  margin-top: 50px;
  background-color: orange;
  padding: 10px;
  box-shadow: 0 0 10px black;
  border-radius: 10px;
}
</style>